Two-Dimensional Materials and Metamaterials in Photonics and Optoelectronics (Second Edition)

Dear Colleagues,

Compared to traditional materials, two-dimensional (2D) materials exhibit many unique and fascinating properties. Quantum confinement perpendicular to the 2D plane leads to new electronic and optical properties, such as relativistic carrier transport, indirect to direct bandgap transitions, and valley-polarized light coupling. The extremely small thickness allows for significant control of carrier density through electrostatic gating. The naturally passivated surfaces and weak interlayer bonding make it easy to integrate 2D materials with different types of systems. In this way, 2D materials have received widespread attention in optoelectronic and photonic applications. However, the atomic thickness of 2D materials results in poor light absorption performance, presenting a significant challenge for practical applications. To address this bottleneck issue, considerable efforts have been made to combine 2D materials with metamaterials and metasurfaces to enhance light aborption efficiency. Metamaterial-based waveguides, microcavities, photonic crystals, and plasmonic structures have been demonstrated to significantly enhance the light absorption of 2D materials.

This present Special Issue of Nanomaterials is aimed at presenting the current state-of-the-art in application of 2D materials combined with metamaterials in photonics and optoelectronics, which includes the design and fabrication of materials and devices, experimental characterization and computational modelling studies, as well as exploitation in devices and practical applications.

Prof. Dr. Zhihong Zhu
Prof. Dr. Chucai Guo
Dr. Qingwei Zhou
Guest Editors

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